航天器复合材料桁架连接增强方法与验证  

Connection Enhancement Method and Its Verification for Spacecraft Composite Truss

作　　者：马超[1] 王志国[1] 张如变 胡宗文 刘良威 陆晴[1] 陈红飞 胡敏 MA Chao;WANG Zhiguo;ZHANG Rubian;HU Zongwen;LIU Liangwei;LU Qing;CHEN Hongfei;HU Min(Shanghai Institute of Satellite Engineering,Shanghai 201109,China;Shanghai Composite Material Technology Co.,Ltd.,Shanghai 201112,China;Shanghai Institute of Satellite Equipment,Shanghai 200240,China)

机构地区：[1]上海卫星工程研究所,上海201109 [2]上海复合材料科技有限公司,上海201112 [3]上海卫星装备研究所,上海200240

出　　处：《航天器工程》2024年第3期68-73,共6页Spacecraft Engineering

摘　　要：大型航天器主承载复合材料桁架局部承受过大的轴向拉伸载荷时,存在接头与杆件拉脱破坏的风险。基于胶接桁架碳纤维分层破坏机理,提出了外套管增强胶接、锥面配合增强胶接和组合增强胶接3种连接增强方案,通过优化传力路径达到降低层间应力的目的。针对3种连接增强方案,投产了相应的试件开展性能测试。经试验验证,胶接增强设计方法能够有效提高承载能力33%~66%,极限拉脱力达到200 kN,可为大型航天器主承载桁架研制提供参考。When the main bearing composite truss of large spacecraft is subjected to excessive axial tensile load locally,there is a pulling failure risk for bar and joint.Based on layered failure mechanism of truss adhesive,three kinds of adhesive reinforcement design schemes are proposed:outer sleeve reinforcement,conical fit reinforcement,and combination reinforcement.By optimizing the force transmission path,the goal of reducing interlayer stress is achieved.Corresponding specimens are put into production to carry out performance tests.Experimental results show that the adhesive reinforced design scheme can effectively increase the bearing capacity by 33%~66%,and the ultimate pull-out force can reach 200kN,which can provide useful reference for the development of the main bearing truss of large spacecraft.

关 键 词：航天器 复合材料桁架 胶接接头 连接增强 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]